//
//  UserAccount.swift
//  MyWeiboApp
//
//  Created by 胡海波 on 15/6/27.
//  Copyright © 2015年 胡海波. All rights reserved.
//

import UIKit

class UserAccount: NSObject ,NSCoding{

    var access_token: String

    var expires_in: NSTimeInterval

    // 设置过期日期
    var expiresDate: NSDate

    // 当前授权用户的UID
    var uid: String

    // 友好显示名称
    var name: String?

    // 用户头像地址（大图），180 * 180像素
    var avatar_large: String?

    init(dict:[String: AnyObject]) {

        access_token = dict["access_token"] as! String

        expires_in = dict["expires_in"] as! NSTimeInterval
        uid = dict["uid"] as! String

        // 计算过期日期
        expiresDate = NSDate(timeIntervalSinceNow: expires_in)

    }

    func loadUserInfo(finished:(account: UserAccount?, error: NSError?) -> ()) {

        let params = ["access_token":access_token,"uid":uid]

        NetWorkingTools.shareNetworkTools().GET("2/users/show.json", parameters: params, success: { (_, JSON) -> Void in

            let dict = JSON as! [String: AnyObject]

            self.name = dict["name"] as? String
            self.avatar_large = dict["avatar_large"] as? String

            //print(self)

            // 到此，用户信息基本完整
            // 保存用户信息
            self.saveAccount()

            finished(account: self, error: nil)

            }) { (_, error) -> Void in

                finished(account: nil, error: error)
        }
    }

     override var description: String {

        let properties = ["access_token","expires_in","uid","expiresDate","avatar_large","name"]

        return "\(self.dictionaryWithValuesForKeys(properties))"
    }

    // MARK: ---- 保存和加载文件
    // 归档路径，swift中的类常量都是使用static来定义的
    static let accountPath = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true).last!.stringByAppendingPathComponent("account.plist")


    func saveAccount() {
        print(UserAccount.accountPath)
        NSKeyedArchiver.archiveRootObject(self, toFile: UserAccount.accountPath)
    }

    class func loadAccount() -> UserAccount? {

        print("加载用户")

        // 判断token是否过期，如果过期，直接返回nil
        if let account = NSKeyedUnarchiver.unarchiveObjectWithFile(accountPath) as? UserAccount{

            // 判断日期是否过期，根据当前系统时间进行比较，低于当前系统时间，就认为过期
            // 过期日期大于当前日期，结果应该是降序
            if account.expiresDate.compare(NSDate()) == NSComparisonResult.OrderedDescending {

                return account

            }
        }

        return nil

    }

    required init?(coder aDecoder: NSCoder) {
        access_token = aDecoder.decodeObjectForKey("access_token") as! String
        expires_in = aDecoder.decodeDoubleForKey("expires_in")
        expiresDate = aDecoder.decodeObjectForKey("expiresDate") as! NSDate

        uid = aDecoder.decodeObjectForKey("uid") as! String
        name = aDecoder.decodeObjectForKey("name") as? String
        avatar_large = aDecoder.decodeObjectForKey("avatar_large") as? String
    }

    func encodeWithCoder(aCoder: NSCoder) {

        aCoder.encodeObject(access_token, forKey: "access_token")
        aCoder.encodeDouble(expires_in, forKey: "expires_in")
        aCoder.encodeObject(expiresDate, forKey: "expiresDate")

        aCoder.encodeObject(uid, forKey: "uid")
        aCoder.encodeObject(name, forKey: "name")
        aCoder.encodeObject(avatar_large, forKey: "avatar_large")
    }

}
